For casual collectors,
the Showa series compilation from GNP Crescendo is a good place
to start. The disc covers, in some form, nearly all of the
Showa series Godzilla films, minus Ebirah,
Horror of the Deep (1966) and including one track
from Mothra (1961).
Of course, any compilation as wide reaching as this will have
trouble covering its bases. GNP does a nice job with the selections,
although some of the missing cues like "Godzilla vs. the
Tank Squad" from Mothra
vs. Godzilla (1964) or the Kamacuras theme are sure
to displease a few. There are some other justified complaints
to be had about this release too, like the heavy use of sound
effects in between themes or the manner in which the music
on one track leads directly into the next with hardly any silence;
consequently, making a lot of the cues here inappropriate for
using them outside of the disc for things like iPods, for example.

Overall, for bring around $14 and being rather easy to locate,
the disc will still find a target audience for those not willing
to pursue the pricier imports. The disc rounds itself out with
a remix of Akira Ifukube's
Godzilla theme done by Neil Norman.